Brian Cox and Robin Ince visit Canberra for the first of 4 special episodes recorded in Australia. This week they visit the amazing Canberra Deep Space Communication Centre where scientists communicate with, and track the 200 or so spacecraft that are currently exploring our vast solar system and even beyond. They are joined by Astrophysicists Mark Cheung and Alan Duffy, Nobel prize winner Brian Schmidt and comedian Alice Fraser as they track legendary space craft like Voyager, still sending back messages from deep in space some 40 plus years after it first launched. They discover how despite these incredible missions we still don't know what 97% of our universe is made of, and how so many of these explorations are vital to our understanding of one very important planet - our own.Producer: Caroline Steel Executiver Producer: Alexandra Feachem

An underground lab is opening early next year in Australia. Its quest: to help detect dark matter and thereby also help answer some of physics' biggest questions about this mysterious force. It is the only detector of its kind in the Southern Hemisphere. Swinburne University astronomer Alan Duffy takes us on a journey to the bottom of this active gold mine, where researchers will try to detect a ghost-like particle.E-mail us with your deep questions at ShortWave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy